Couldn't the percentage of persons with full-fledged dementia be reducing because people with the earlier signs of mild cognitive impairment are getting medical help AND are developing their own strategies of nutraceuticals, physical activity, creative arts, good sleep, better nutrition, stress reduction, reduced exposure to toxins, meaningful work, and enjoyable life, and that this is slowing or reducing their move toward dementia? That is certainly the case for me and many others that I know with early MCI. Mary Kay Baum of forMemory, Inc.

Summary: The prevalence of dementia in older Americans seems to be decreasing. Whether or not researchers find new medicines to prevent dementia, higher levels of education and late-life activity might reduce dementia rates. Ken Langa, MD, Ph.D. Much has been written about the coming...